How to Switch the dialog Form

[Smiler]

just like this:

when you click the button of the Dialog A,

Dialog B is showing,and Dialog A is closed.

Then you click the button of the Dialog B,

Dialog A is showing,and Dialog B is closed .

[Lykurg]

And you have a main window or not?

But anyway, simple hide and show the dialogs without deleting them. And then you only need to set up a signal slot connection between the two dialogs. But without any further informations we can't help you.